Unleash the full potential of your truck with a Monster transmission. We build dyno-tested 46RE, 47RE, 48RE, and 68RFE units engineered to conquer Cummins torque and Hemi power. For towing, racing, or daily driving, we deliver reliability that lasts.
Stock Dodge transmissions are known for specific weaknesses, especially when faced with heavy loads or increased engine power. Monster targets these failure points head-on. By using superior friction materials, high-pressure valve bodies, and billet components, we build transmissions that don't just replace the original—they perfect it.
The go-to 4-speed for Magnum 5.2L & 5.9L V8 trucks. Our rebuilds solve common governor pressure sensor and overdrive clutch issues for dependable towing and daily driving.
Built to master the legendary 5.9L Cummins. We fortify the 47RE to prevent overdrive burn-up and valve body cross-leaks, creating a unit that reliably handles diesel torque.
The ultimate 4-speed for High-Output Cummins trucks. Our 48RE builds are engineered for competition-level stress with options for sled pulling, racing, and extreme towing.
The modern 6-speed for 6.7L Cummins trucks requires key updates for longevity. Our builds correct critical valve body and clutch drum flaws for durability you can trust.
Identify your Ram's transmission using your truck's year and engine. This is the most common configuration, but always verify if possible.
| Transmission | Engine(s) | Typical Model Years |
|---|---|---|
| 46RE | 5.2L V8, 5.9L V8 (Gas) | ~1996 - 2002 |
| 47RE | 5.9L 12V/24V Cummins (Diesel) | ~1996 - 2002 |
| 48RE | 5.9L H.O. Cummins (Diesel) | ~2003 - 2007 |
| 68RFE | 6.7L Cummins (Diesel) | ~2007.5 - Present |
From our workshop to your driveway, every build is backed by our commitment to quality and performance.
We target known Chrysler weak points with stronger hard parts, superior clutches, and recalibrated hydraulics to ensure durability.
Get a converter perfectly matched to your engine and goals, from heavy-towing single-disc to competition multi-disc options.
No transmission ships until it passes our rigorous, multi-point dyno testing protocol. Install with total confidence.
Our specialists live and breathe transmissions. Get the right recommendation the first time from a team that knows your truck.
We stand behind our work with comprehensive warranty options, giving you peace of mind on and off the road.
With streamlined logistics and core return process, we get your Ram back in action faster than the competition.
Your questions about upgrading your Ram transmission, answered.
For stock or lightly modified trucks used for daily driving or light towing, our Heavy Duty "Eat My Shift" builds are a perfect fit. For trucks with tuners, larger turbos, or those used for heavy hauling, we strongly recommend our "Annihilator" series with billet components.
Yes. Many 48RE issues stem from worn valve bodies and failing governor pressure solenoids. Our builds include fully remanufactured and calibrated valve bodies and upgraded electronics to restore crisp, reliable shifting and proper line pressure rise.
A multi-disc (or triple-disc) converter is highly recommended for any Cummins engine making over 400 HP or 800 lb-ft of torque. It provides significantly more clutch surface area to prevent slippage under high load, ensuring all your power makes it to the ground.
Our transmissions are designed as direct, bolt-in replacements for the factory unit. While installation is a job for a confident mechanic with the right tools, no custom modification is required. They arrive ready to install.